Restore Full Functionality to Your 2004-2007 GMC Savana 3500 Van
If your work van is plagued by bizarre electrical issues, a failing Body Control Module (BCM) is the most likely culprit. As a technician with over two decades of experience, I’ve seen firsthand how a bad BCM can bring a reliable vehicle to a standstill. This isn’t just an inconvenience; for a Savana owner, it’s downtime that costs money. This direct-fit BCM, part number 15137393, is the definitive solution to get your van’s critical systems back online. It arrives pre-programmed to your van’s specific VIN, eliminating the need for expensive dealership programming and allowing for a simple, plug-and-play installation.
From the Diagnostic Bay: The Case of the Haunted Work Van
A contractor brought in his ’06 Savana 3500, convinced it was possessed. The dome light would stay on, the driver’s power window worked intermittently, and the radio would randomly shut off. He’d replaced the battery and checked fuses, but the problems persisted. After hooking up my scanner, I saw a slew of communication error codes pointing to the BCM. These modules are the central hub for all body electronics, and when they fail internally, they create a cascade of seemingly unrelated issues. We installed a VIN-programmed BCM, and in less than 10 minutes, every single one of his electrical gremlins was gone. It’s a common failure, and this part is the correct fix.
Is Your Savana Van Exhibiting These Faults?
A failing BCM can manifest in numerous ways. If you’re experiencing any of the following, it’s a strong indicator that your module needs replacement. This is the first and most important step in diagnosing your 2004-2007 Savana 3500 BCM.
- âś” Intermittent or non-functional power windows or door locks.
- âś” HVAC blower motor or climate controls not working correctly.
- âś” The security light is flashing, and the van won’t start (Passlock issues).
- âś” An airbag warning light on the dash, often with a DTC like B1001.
- âś” Headlights, taillights, or interior lights behaving erratically.
- âś” Wipers that won’t turn on, or won’t turn off.
- âś” A cluster of communication-related Diagnostic Trouble Codes (DTCs).
A Straightforward Guide to Installation
One of the biggest benefits of this module is its ease of installation. You don’t need to be a professional mechanic to get your van running right again. The BCM is typically located in the center of the dash on Savana and Express vans.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- Locate the Module: On your Savana van, the BCM is found behind the dash panel in the center stack area. You may need to remove a trim piece for access.
- Swap the Part: Carefully unplug the electrical connectors from the old BCM. They have release tabs that need to be pressed. Remove the old module and install the new one in its place.
- Reconnect and Test: Plug the connectors firmly into your new BCM. Reconnect the battery terminal and start the vehicle. Test all functions like lights, windows, locks, and wipers to confirm the repair.
- Post-Install Checks: In some cases, an airbag light may require a ‘Setup SDM Primary Key’ procedure with a pro-level scan tool. A brake pedal position relearn may also be needed. However, for most installations, no further steps are required.
Verified Fitment for GM Trucks and Vans
While this is the correct 2004-2007 Savana 3500 BCM, it also serves as a reliable replacement for a wide range of other GM vehicles. This part is interchangeable with service numbers 10383536, 15116066, 15136225, 15136877, 15137394, 15137395, 15137396, 15198116, and more. Always verify your part number or consult the list below.
EXPRESS 3500 VAN 04-07 Body Control (BCM); (center dash), w/commercial tradesman package (opt PRP)
SAVANA 2500 VAN 04-07 Body Control (BCM); (center dash), w/commercial tradesman package (opt PRP)
EXPRESS 2500 VAN 04-07 Body Control (BCM); (center dash), w/commercial tradesman package (opt PRP)
SAVANA 1500 VAN 04-07 Body Control (BCM); (center dash), w/commercial tradesman package (opt PRP)
EXPRESS 1500 VAN 04-07 Body Control (BCM); (center dash), w/commercial tradesman package (opt PRP)
AVALANCHE 1500 03-06 Body Control (BCM); (under steering column)
AVALANCHE 2500 02-06 Body Control (BCM); (under steering column)
ESCALADE & ESV & EXT 03-06 Body Control (BCM); (under steering column)
SIERRA 1500/2500/3500 PICKUP 03-07 (Classic Style) Crew Cab, (under steering column)
SILVERADO 1500/2500/3500 PICKUP 03-07 (Classic Style) Crew Cab, (under steering column)
HUMMER H2 03-07 Body Control (BCM); (LH dash)
SUBURBAN 1500/2500 03-06 Body Control (BCM); (under steering column)
TAHOE 03-06 Body Control (BCM); (under steering column)
YUKON & YUKON XL 1500/2500 03-06 Body Control (BCM); (under steering column)
Frequently Asked Questions
What does a Body Control Module do on a Savana van?
The BCM acts as the central computer for your van’s body electronics. It controls non-engine related functions like the power windows, door locks, interior and exterior lighting, security system, wipers, and HVAC system.
Is this BCM really plug-and-play?
Yes. We program the module to your vehicle’s VIN before shipping. This ensures it communicates correctly with your van’s other systems right out of the box, saving you a trip to the dealership for programming.
Do I need to send my old BCM back?
No, there is no core charge for this part. You can keep your old module, which simplifies the process and gets your van repaired faster.
My airbag light is on. Will this fix it?
A faulty BCM can cause the airbag light to illuminate with code B1001. Replacing the BCM is the correct repair, but after installation, the system may need to be synced using a ‘Setup SDM Primary Key in BCM’ procedure with a professional scan tool to turn the light off.
Will this fix my no-start problem?
It can. The BCM is a key component of the GM Passlock security system. If the BCM fails, it can prevent the vehicle from starting. If your security light is flashing, a faulty BCM is a very common cause of the no-start condition.